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A kind of lead-calcium internalization into colloidal electrolyte and preparation method thereof

A colloidal electrolyte, internalization technology, applied in lead-acid batteries, electrolyte immobilization/gelation, circuits, etc., can solve the problems of capacity attenuation, short deep cycle life, softening and falling off of positive active materials, etc., to slow down softening Falling off, improving the service life of deep cycle, good colloidal stability

Active Publication Date: 2017-01-04
江苏海宝电池科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above-mentioned problems of lead-calcium internalization battery capacity decay in the initial stage (the first 50 cycles), the positive active material softens and falls off, and the deep cycle life is short, the present invention provides a long-life lead-calcium internalization colloidal electrolyte

Method used

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  • A kind of lead-calcium internalization into colloidal electrolyte and preparation method thereof

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Embodiment 1

[0028] A kind of lead calcium internalized into a colloidal electrolyte, the weight percentage of each component is: fumed silica: 1.5%, sodium silicate: 0.5%, anhydrous sodium sulfate: 1.5%, stannous sulfate: 0.1%, carboxymethyl Sodium cellulose (CMC): 0.08%, bismuth trioxide: 0.1%, phosphoric acid: 0.8%, sulfuric acid: 34%, and the rest is water.

Embodiment 2

[0030] A kind of lead calcium internalized into a colloidal electrolyte, the weight percentage of each component is: fumed silica: 0.8%, sodium silicate: 1.5%, anhydrous sodium sulfate: 1.2%, stannous sulfate: 0.15%, carboxymethyl Sodium cellulose (CMC): 0.1%, bismuth trioxide: 0.2%, phosphoric acid: 0.8%, sulfuric acid: 34%, and the rest is water.

Embodiment 3

[0032] A kind of lead calcium internalized into a colloidal electrolyte, the weight percentage of each component is: fumed silica: 3.5%, sodium silicate: 1.3%, anhydrous sodium sulfate: 1.8%, stannous sulfate: 0.2%, carboxymethyl Sodium cellulose (CMC): 0.05%, bismuth trioxide: 0.3%, phosphoric acid: 0.8%, sulfuric acid: 35.5%, and the rest is water.

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Abstract

The invention discloses a lead-calcium formation colloid electrolyte which is composed of the following components in percentage by weight: 0.8-5% of gas-phase silicon dioxide, 0.1-2% of sodium silicate, 1-2% of anhydrous sodium sulfate, 0.1-0.5% of stannous sulfate, 0.05-0.5% of sodium carboxymethyl cellulose, 0.02-0.5% of bismuth trioxide, 0.2-3% of phosphoric acid, 28-38% of sulfuric acid and the balance of water. The invention also discloses a preparation method of the lead-calcium formation colloid electrolyte. When being used for preparing a lead-calcium formation battery, the colloid electrolyte improves the early capacity attenuation effect of the lead-calcium formation battery, decelerates the softening shedding of the active substances at the positive pole, and prolongs the deep cycle service life of the battery. The colloid electrolyte disclosed by the invention has the advantages of favorable consistency, favorable colloid thixotropy and favorable colloid stability.

Description

technical field [0001] The invention relates to a colloidal electrolytic solution formed by internalizing lead and calcium. [0002] The invention also relates to a preparation method for internalizing lead calcium into colloidal electrolyte. Background technique [0003] Since the country canceled the production of lead-antimony-cadmium lead-acid batteries at the end of 2013, most lead-acid battery manufacturers have changed from lead-antimony-cadmium externalization to lead-calcium internalization batteries to comply with the requirements of national policies. Although the lead-calcium battery overcomes the problem of fast grid corrosion in the lead-antimony-cadmium battery, it also has the disadvantages of rapid initial (first 50 cycles) capacity decay, short life, and easy softening and falling off of the active material, especially when the battery is deep Discharge, prompting a sharp decline in battery life. [0004] The uniformity of the electrolyte and the thixotro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/10H01M2300/0085Y02E60/10
Inventor 沈维新
Owner 江苏海宝电池科技有限公司
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